{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L452REI6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L452REI6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L452REI6","factsUrl":"https://icboms.com/api/mcp/products/STM32L452REI6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM® Cortex®-M4, 32-Bit Single-Core, 80MHz, 512KB (512K x 8) FLASH, 160K x 8 RAM, 64-UFBGA, -40°C ~ 85°C (TA).","salesMarkdown":"The STM32L452REI6: The peripheral set includes CANbus, I²C, SPI, UART/USART, USB, QSPI, SAI, and MMC/SD interfaces. ## 52 I/O and 64-UFBGA footprint — layout implications With 52 general-purpose I/O brought out to a 64-ball UFBGA on 0.5 mm pitch, this package demands a PCB with micro-via capability or at least a 4-layer stack-up to route the inner balls. The 5x5 mm body saves board area compared to an LQFP64, but the assembly house needs experience with fine-pitch BGA reflow. It is ROHS3 compliant and available through independent distribution channels.","metaTitle":"STM32L452REI6 STM32L4 32-bit ARM Cortex-M4 MCU, 80 MHz","metaDescription":"STMicroelectronics STM32L452REI6 32-bit ARM Cortex-M4 MCU in 64-UFBGA. 80 MHz core, 512 KB Flash, 160 KB SRAM, -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tray","RAM Size":"160K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M4","Package / Case":"64-UFBGA","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L452","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-UFBGA (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.1700","priceTiers":[{"qty":1,"price":"$8.17000","currency":"USD"},{"qty":10,"price":"$7.38100","currency":"USD"},{"qty":25,"price":"$7.03760","currency":"USD"},{"qty":80,"price":"$6.11050","currency":"USD"},{"qty":230,"price":"$5.83591","currency":"USD"},{"qty":490,"price":"$5.32098","currency":"USD"},{"qty":980,"price":"$4.63440","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cad9ed35fe76f9279f9f7119d5fb8f94.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L452REI6/alternatives.json"},"ai":{"faq":[{"question":"How does STM32L452REI6 compare to the STM32L151CBU6A?","answer":"The STM32L151CBU6A is an older Cortex-M3 part from the STM32L1 series running at 32 MHz with 37 I/O and no FPU. The STM32L452REI6 offers double the core speed at 80 MHz, a Cortex-M4 with FPU, 52 I/O, and more memory — 512 KB Flash vs the 's smaller Flash — in a 64-UFBGA package. The is a cost-optimized alternative for simpler battery-powered tasks where the M4's DSP and FPU are not needed."},{"question":"Is STM32L452REI6 suitable for low power IoT applications?","answer":"Yes, the STM32L4 series is designed for ultra-low-power operation. The 1.71 V minimum supply voltage supports direct battery connection, and the Cortex-M4 with FPU can run sensor fusion or edge ML workloads while the core is clocked at 80 MHz. The 160 KB SRAM leaves room for protocol stacks without external RAM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L452REI6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L452REI6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}